Engine.



A. R. ADAMS.

ENGINE.

' APPLICATION FILED 'AUG. 10, 1910. 1,005,763. Patented 0,01. 10, 1911.

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AMOS R. ADAMS, or BLUFFTON, INDIANA.

ENGINE.

Specification of Letters Patent.

Patented Oct. 10, 1911.

Application filed August 10, 1910. Serial No. 576,456.

To all whom 'it may concern:

Be it known that I, AMos R. ADAMS, a citizen of the United States, residing at Bluffton, in the county of lVells and State of Indiana, have invented new and useful Improvements in Engines, of which the following is a specification.

This invention provides an engine of the type embodying a cylinder and a piston arranged to operate in the cylinder, the purpose being to devise novel means for imparting to the piston a simultaneous re ciprocatory and rotary movement, this result being effected by a cooperating spiral way and interlocking part between the walls of the piston and cylinder.

The invention contemplates a piston of novel form and peculiar mountings between the piston and the piston rod, whereby the piston in its reciprocating movements is free to move longitudinally upon the rod or shaft and at the same time impart a rotary movement thereto.

The invention also contemplates peculiar unique spiral interlocking means between the piston and cylinder, whereby the piston in its reciprocating movements simultaneously has imparted thereto a rotary movement which is transmitted to the shaft or rod upon which the piston is mounted.

The invention results in the provision of an engine of simplified construction since the number ofparts are reduced to a minimum amount and a number of joints are dispensed with, thereby minimizing the wear and reducing the number of parts to be lubricated to the smallest amount possible.

The invention consists of the novel features, details of construction and combination of parts, which hereinafter will be more particularly set forth, illustrated in the accompanying drawing, and pointed out in the appended claim.

Referring to the drawing, forming a part of the application, Figure 1 is a central longitudinal section of an engine embodying the invention. Fig. 2 is a side view of the piston. Fig. 3 is a transverse section of the piston on the line mw of Fig.1. Fig. 4 is a section on the line 3 g of Fig. 1.

Corresponding and like parts are referred to in the following description, and inclicated in all the views of the drawing, by the same reference characters.

The shaft or rod 1 is mounted to have a rotary movement imparted thereto and passes centrally through the cylinder 2 of the engine. The piston 3 is mounted to reciprocate both upon the shaft 1 and within the cylinder 2 and has a spiral interlocking connection with the cylinder so as to have a rotary movement imparted thereto simultaneously with its reciprocating movement, and said piston likewise has an interlocking connection with the shaft 1 so as to impart a rotary movement thereto while reciprocating thereon. The piston 3 preferably consists of a hollow or tubular body and is provided at each end with a stufling box l so as to maintain a close fit with the shaft 1 and prevent any escape of the motive medium. The piston is provided near each end with packing or piston rings 5 so as to maintain a close fit with the inner walls of the cylinder and prevent any escape of the motive medium. A spiral interlocking connection is provided between the piston and the inner walls of the cylinder so as to impart a rotary movement to the piston synchronously with its reciprocating movement. This spiral connection may be had in a variety of ways. As shown a spiral way or groove 6 is formed in the outer side of the piston and receives a projection 7 extending inward from the inner wall of the cylinder. It is to be understood that there may be a number of spiral interlocking connections according to the size and power of the engine, so as to insure stability and proper working. The projection 7 preferably consists of a roller comprising a head and a stem, the head projecting into the space of the cylinder and entering the spiral groove 6, whereas the stem is mounted in an opening in a supporting part, which in the present instance consists of a hollow plug 8, which is threaded into an opening in a side of the cylinder. This construction admits of the part 7 being easily removed and quickly replaced. An opening 9' extends through the plug 8 and projection 7 and admits of oil being fed to the spiral connection between the piston and cylinder. The plug 8 besides providing convenient means for placing the part 7 in position also admits of the part 7 being adjusted to compensate for wear, it being understood that any suitable means may be employed to prevent movement of the plug when properly positioned.

From the foregoing it will be understood that as the piston is reciprocated in the cylinder it at the same time has a rotary movement imparted thereto by reason of the spiral connection between the piston and cylinder. The manner of reciprocating the pis-- ton within the cylinder will depend upon the type of engine to which the invention is adapted, and, since the same is well understood in the art and forms no essential part of the present invention detailed disclosure thereof is not deemed necessary. An interlocking connection is had between the shaft 1 and piston 3 so as to transmit a rotary movement to the shaft from the piston during the reciprocating movements of the latter. This may be accomplished in a variety of ways. As shown the piston 3 is provided at opposite points with longitudinal ways 01' grooves 10 in which opposite ends of a cross head 11 are fitted, said cross head being secured to the shaft 1 by means of a pin 12, or in any manner. The cross head 11 has a centrally disposed hub portion bored to receive the shaft 1, the end portions extending outwardly from the hub entering the grooves 10. As the piston reciprocates the ends of the cross head 11 operate in the grooves 10 and during the rotation of the piston the shaft 1 receives a corresponding rotary movement.

From the foregoing description, taken in connection with the accompanying drawing, the advantages of the construction and of the method of operation will be readily apton arranged to reciprocate within the cylinder and provided with spiral grooves, plugs removably and adjustably mounted in the walls of the cylinder and having openings therethrough which are enlarged at their inner ends, rotary projections mounted in the enlarged openings of said plugs and extending into the spiral grooves of the piston and having openings in register with the openings of the plugs, and a shaft passing through the cylinder and having the piston mounted to reciprocate thereon and to turn therewith. V

In testimony whereof I affix my signature in presence of two Witnesses.

AMOS R. ADAMS.

lVitnesses ANDREW J. ADAMS, WVILLIAM M. HELMS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

